Rock-drill.



J. H. HUHN. ROCK DRILL. APPLIOATION FILED 00T. 26,1907.

Patented Nov. 17, 1908.

2 SHEETS-SHEET 1. I

J. H. HUI-IN.

ROGK DRILL. APPLICATION FILED 00T. 26,1907.

Patented Nov. 17, 1.908.

' 2 SHEETS-SHEET z.

' INvaN-rnR W1 'massi-:5 777W/ Z7? 773W UNITED STATES PATENT OFFIQ.

JOHN H. HUHN, OF FAIRMONT, WEST VIRGINIA, ASSIGNOR OF ONE-HALF TO JOHNR. STEEL, OF BARRAOKVILLE, WEST VIRGINIA.

ROCK-DRILL.

Specification of Letters Patent.

Patented Nov. 17, .1908.

Application filed October 26, 1907. Serial No. 399,263.

To all whom it may concern:

Be it known that I, JOHN II. I-IUHN, citizen of the United States,residing at Fairmont, in the county of Marion and State of TestVirginia, have invented certain new and useful Improvements inRock-Drills, of which the following is a specication.

My invention relates to the art of mining and refers especially toapparatus for boring and drilling.

The chief objects of my improvements are to provide a simple, durableand efcient machine for operating drills and similar boring tools usedin mining coal and other minerals; to furnish a machine for the purposestated that will permit the use of the drill or augur at the plane ofsupport with as much ease and efficiency as at higher levels; and to soarrange the operating and transmission mechanism that the power can beapplied at the most desirable point which is directly beneath the stock.

Further objects of my invention are to furnish a novel and durablethread box for the drill rod; to so construct the box that it can bereadily opened for the speedy with drawal of the rod, and to furnish arapid and easily operated means for throwing the operating mechanisminto and out of gear.

Other objects are to supply an apparatus of such design as to be lightyet strong, and with few parts, so that the appliance may beeconomically manufactured and cheaply and readily repaired.

I accomplish the above and other important objects by the use of themechanism illustrated in the accompanying drawings which form a part ofthis application and in which Figure l is a side elevation of myimproved drill and augur operating machine, with the drill rod removed;Fig. 2 is a vertical longitudinal section with the thread box removed;Fig. 3 is an end elevation with the drill-stock head partially rotatedand the sleeve of the brace partly broken away; Fig. l is a bottom planview, showing the gear shifting lever; Figs. 5, 6, and 7, are details,enlarged, of the gear shifting mechanism; Fig. 8 is an enlargedlongitudinal section of the thread box in its casing and attached to itsbearing plate; Fig. 9 is an enlarged top plan view of the structuresshown in Fig. 8, and Fig. l0 is an enlarged perspective view of thethread box removed from its casing.

Referring more in detail to the drawings, the numeral l5 indicates abase-plate provided with a central opening 16, one side of the basebeing cut away to form a recess 17 which permits access to a shiftinglever hereinafter described, and to allow a full sweep to said lever.

Upon the base plate, and forming a closure for the opening 16, issecured a bed-plate 13, and upon this plate rests a semi-cylindricalbase 19 (Figs. l and 2) disposed horizontally and having a forwardlyprojecting plate 20, provided upon its under surface with an annularcollar or flange 2l which engages a circular opening in the bed plate18, said iange having a turning fit in its seat thus per mitting therotation of the said base upon the bed plate 13. One side of saidsemicylindrical base 19 is slotted and provided with a clamping screw 22passing through a flange 23 and tapped in a boss 24.' Upon the oppositeside of the cylindrical base is a corresponding boss 25, through whichpasses a bolt 26. This bolt extends through a curved slot 27 in the bedplate and its lower end is furnished with a retaining nut 28. Said slotlimits the position of the base upon its flange, the bolt 26 serving tolock it securely in adjusted position.

lllithin the cylindrical portion 19 of the base is located a tubularsleeve or bearing 29, having an enlarged end 30 to which is integrallyjoined a hollow post or' drill-stock 3l, a lateral web 32 serving tostrengthen the junction of the post 3l with the base and to increase therigidity of the structure. The outer end of the bearing 29 projectsbeyond the base and is embraced by a split collar 33 having parallelflanges 34 between which is held the lower end of a diagonal brace 35, ascrew 36 serving to clamp the whole firmly together. The upper end ofthe brace 35 is bifurcated to form a forli 37 which embraces the web 32,and is secured by a bolt 38. lhen the screw 22 is loosened the bearing29 is free to turn in its casing, the cylindrical portion l5) of thebase, but is held firmly in adjusted position when the said screw istightened, longitudinal displacement being prevented by the clampingcollar 33 and the enlarged end 30.

Upon the upper end of the drill-stock 31 is mounted a head 39 and fromthe lower part of this head extends a reduced portion 40, tubular inform; which telescopes within the post 31. The upper portion of saidpost is slotted and a binding collar 41, surrounds its upper end, aclamping screw 42 serving to hold the telescoping portion at anyadjusted position, which may be longitudinal or pivotal. The head isprovided with an annular groove 43 which surrounds the neck 44 justabove the reduced portion 40, and in this groove are received the curvedarms 45 of a bracket 46, the body having a slot 47 to admit the web 32and an adjusting screw 4S. This screw passes through a guide plate 49and the slot 47, and has a threaded engagement with the collar 41. r1`hesaid bracket 46 serves to support the head in extended position, duringthe process of adjustment and until the clamping screw 42 is set, theengagement of the arms 45 permit-ting the head to be rotated upon thepart 40. Fixed to the under side of the head is aflange 50 and to thisis bolted one end of a threaded brace-rod 51, the said rod beingsurrounded by a loose sleeve 52, the lower end having a lug 53 adaptedto engage holes 54 in the bed plate 18, the upper end of said sleeveabutting against an adjusting nut 55, which determines by its positionthe length of the combination brace thus formed. The said head 39 isdivided on a plane at a right angle to the said extension 40 into twosections, the upper section 56 being secured to the lower by screw bolts57. The interior of the head thus formed is chambered and bored toreceive a hollow shaft 58 through which passes the drill bar, a feather58a upon the inner surface of said hollow shaft engaging aspline in saidbar in the usual manner. The drill bar is not shown in the drawing northe operative connection illustrated since their construction and useare matters easily understood by those skilled in the art. The front endof said head 39 is reduced by an annular rabbet to forni a shoulder 59and upon this reduced end is carried a threadbox bearing 60 providedwith a counter bore which lits over the shoulder 59 and the bearing isfastened to the front of the head by screw bolts 61. The front side ofthe bearing 6() is provided with a T-slot 60a.

The thread box is constructed in halves 62 held in position by a casing63, formed of a single strap or plate which embraces three sides of thesaid box and is connected on the top by a rock shaft 64, the ends of theshaft being reduced and secured in ears 65 which project from saidcasing. Each half of the box carries upon either end a gib 66, fitted toslide in said T-slot 60a in the bearing 60 and provided with stops 66a.The lower side of the casing plate 63 has a projecting guide lip 67which enters the slot 60a. The lower half of the box is attached -to thecasing by a screw 68, and an adjusting screw 69 passes through athreaded hole in the rock shaft 64, its lower end engaging an eccentricface 64l cut in the rupper half of the thread box, and its upper endbent at an angle to i The parts thus far described constitute thesupporting structure of the drilling machine, within which are locatedthe coperating operative elements. Upon the hollow shaft 58 is carried abevel gear 72 which meshes with and receives motion from a bevel pinion73 mounted upon a hollow shaft or sleeve 74 journaled in the extension40. The bore of this sleeve 74 is squared and receives a square shaft 75bearing upon its lower end a bevel pinion 76 which meshes with a bevelgear 77 mounted upon the end of a horizontal shaft 7S journaled in thesleeve 29, said shaft being retained in place by a collar 7 9 keyed tothe shaft by a pin S0. It will thus be understood that the head 39 andsleeve 74 may be slid longitudinally upon the square shaft 75, beinglocked in adjusted position by the clamp screw 42. The collar 79 servesfor the attachment of a flexible shaft (not shown) when it is desired toapply power in that way.

The gearing thus described is driven by a pulley S1 mounted upon avertical shaft 82 keyed by a pin 33 to the hub S4 of a bevel pinion 85,meshing with and imparting motion to the bevel gear 77. Upon the upperside of the pinion is a reduced portion 86 forming a bearing journaledin a box S7, supported by an oset 8S, secured by screws or bolts 89 tothe horizontal extension 2O of the base. The bearing S6 is essentially acontinuation of the main shaft 82, the particular details being carriedout in the manner shown for convenience in assembling. The hub 84 of thepinion S5 has a bearing in a collar 90, supported by an external flange91, upon cams 92 projecting upwardly from an internal flange 93 whichforms part of an annular hanger 94, secured to the under side of thebed-plate 18 by screw bolts 95. The under surface of the said fiange 91is cut away upon opposite sides to form recesses 96, which correspondwith the cams 92. To the under side of the collar is secured a shiftinglever 97 by means of which the said collar can be rotated within thering hanger 94, and this movement will Til elevate and depress thecollar A90 as the inclined faces 98, 99 of the cams and recesses passover each other, thus shifting the pinion 85 into and out of gear withsaid gear wheel 77. One side of the wall of the ring hanger is cut awayto form a slot 100 to acc0mmodate the lever 97 which lies in the beforementioned recess 17 of the base plate 15.

Having thus described the construction of my improved drilling machinein detail, I will give a general outline of the method of applying theapparatus in the operation of a coal augur or drill. rllhe machine willbe supported in the usual manner upon timbers placed beneath the baseplate 15, or the said plate may rest directly upon the floor of thetunnel, a suitable trench or channel being cut therein to accommodatethe driving mechanism. The machine having been properly set andoperative connection made between the source 0f power and the drivingshaft, the thread box bearing is opened by means of the adjusting screw69 to receive a suitably splined tool, such as an augur or drill, whichis placed in the hollow shaft 58 so that the spline in the tool engagesthe feather 58L to cause the joint rotation of the shaft and drill. Thesaid box is then closed upon the threads with which the drill bar isfurnished, and when the drill is rotated the threaded engagement willcause the drill to be properly fed to its work. The screws 42 and 48 areloosened. so that the head 39 may be elevated to the desired position,where it is held by the screw 48. Rotation is then made upon the bracket46 as required and the parts secured by tightening the screw 42. In allinclined positions of the drill stock 31 the brace screw 51 may be usedto increase the stability apparatus. The power is now applied to operatethe drill, the bevel wheel 88 being thrown into and out of gear at willby means of the lever 97.

Having thus described my invention what I claim as new, is

1. In a drilling machine, the combination with a bed-plate, and a basepivotally mounted thereon, of a horizontal sleeve mounted to rock insaid base, a drill stock joined to said sleeve and extending at an angletherewith, drill operating means carried by said sleeve and drill stock,and a driving shaft having its axis lying in the same plane as the axisof the drill stock.

2. In a drilling machine, the combination with a bed-plate, and a basepivotally mounted thereon, of a horizontal sleeve mounted to rock insaid base, a drill stock formed integral with said sleeve and extendingat a right angle therefrom, drill operating means carried by said sleeveand drill stock, and a driving shaft arranged with its axis in the sameplane as the axis of the drill stock.

3. In a drilling machine, the combination with a bed plate, and a basepivotally mounted thereon, of ahorizontal sleeve mounted te rock in saidbase, a drill stoel; formed integral with said sleeve and extending atan angle therefrom, drill operating means carried by said sleeve anddrill stock, a driving shaft arranged with its axis in the same plane asthe axis of the drill stock, and manually operated means for puttingsaid shaft into and out of gear with said drill operating means.

4. In a drilling machine, the combination with a bed plate, and a basepivotally mounted thereon, of a horizontal sleeve mounted to rock insaid base, a drill stock formed integral with said sleeve and extendingat a right angle therefrom, drill operating means carried by said sleeveand drill stock, a driving' shaft arranged with its axis in the sameplane with the axis of the drill stock, a collar for said sleeve, abrace member connecting said collar with the drill stock, and means forputting said shaft into and out of gear with the drill operating means.

In a drilling machine, the combination with a bed plate, and a basepivotally mounted thereon, of a horizontal sleeve mounted to rock insaid base, a drill stock formed integral with said sleeve and extendingat an angle therefrom, drill operating mechanism carried by the sleeveand drill stock, a driving shaft arranged with its axis in the sameplane as the axis of the drill stock, a collar for the said sleeve, abrace connecting said collar with the drill stock, and means for puttingsaid shaft into and out of gear with the drill operating mechanism, saidmeans consisting of a collar surrounding` said shaft and adapted to movethe shaft longitudinally when said collar is turned.

6. In a drilling machine, the combination with a. bed plate, and a basepivotally mounted thereon, of a horizontal sleeve mounted to roel; insaid base, a drill stock formed integral with said sleeve and extendingat a right angle therefrom, a collar for the sleeve, a brace connectingsaid collar with the drill stock, a drill head carried on said stock, asectional thread box slidably mounted upon the head, means foralternately locking and releasing the thread box sections, drilloperating mechanism carried by the sleeve and drill stock, a drivingshaft arranged with its axis in the same plane as the axis of the drillstock, and manually operable means for moving the driving shaftlongitudinally.

7.. In a drilling machine, the combination with a bed plate, and a basemounted thereon and adapted to turn about a vertical axis, of ahorizontal sleeve journaled in said base, a drill stock forme-d integralwith said sleeve and arranged with its axis in a plane cutting saidvertical axis, drill operating mech anism carried by said sleeve anddrill stock, a driving shaft arranged with its axis coinciding with saidvertical axis, and manually operable means for moving said shaftvertically in its bearings.

S. In a drilling machine, the combination with a bed plate, a basemounted thereon and adapted to turn about a vertical axis and a drillstock having a hollow bearing extending at a right angle therefrom, saidbearing journaled to rock in said base, of a collar for said hollowbearing, a brace connecting said collar and stock, a driving shafthaving its axis coincident with said vertical axis, a collar surroundingsaid shaft, an annular hanger supporting said collar, said collar andhanger having inclined faces arranged for mutual engagement, and a leverattached to said collar.

9. 1n a drilling machine, the combination with a bed plate, a basemounted thereon and adapted to turn about a vertical axis, and a drillstock having a hollow bearing extending at a right angle therefrom, saidbearing journaled to rock in said base, of a collar for said hollowbearing, a longitudinal web attached to the drill stock, a brace memberconnecting said collar and web, a driving shaft arranged with its axiscoincident with said vertical axis, and manually operable means forshifting said driving shaft longitudinally.

10. 1n a drilling machine, the combination with a bed plate, a basecarried thereon and arranged toturn about a vertical axis, and a drillstock having a hollow bearing extending at a right angle therefrom andjournaled to rock in said base, of means for clamping said bearing, acollar for the bearing, a longitudinal web projecting from the drillstock, a brace connecting said collar and web, a driving shaft arrangedwith its axis coincident with said vertical axis, and means for shiftingsaid driving shaft longitudinally, said means consisting of a collarsurrounding said shaft, an annular hanger supporting the collar, camscarried by said collar and hanger and adapted for mutual engagement, anda lever attached to the collar.

11. In a drilling machine for the purpose specified, the combinationwith a supporting base, a drill stock arranged to rock in said base, ahead for said drill stock having a swivel connection therewith and drilloperating mechanism carried by said drill stoclr and head, of drillfeeding means consisting of a thread box formed in sections, a slidingconnection between the box and head, an adjusting screw mounted to rockupon one of the sections and adapted to engage the other section, and adriving shaft arranged with its axis lying in the same plane as the saiddrill stock.

12. 1n a drilling machine for the purpose stated, the combination with asupporting base, a drill stock arranged to rock on said base, a headhaving a swivel connection with the stock and drill operating mechanismcarried by said drill stoclr and head, of drill feeding means consistingof a thread box formed in sections, an adjusting screw mounted to rockupon one of the sections and adapted to engage the other section, avertical driving shaft, and means for shifting the said shaft into andout of gear with said drill operatino mechanism.

18. 1n a drilling machine for the purpose stated, the combination with asupporting base, a drill stock arranged to rock on said base, a head forsaid stock having a swivel connection therewith, an adjustable brace forthe stock and drill operating mechanism carried by said stock and head,of drill feeding mechanism consisting of a thread box formed insections, an adjusting screw mounted upon a rock-shaft carried by one ofthe sections and adapted to engage the other section, a vertical drivingshaft, and means for shifting the said shaft into and out of gear withsaid drill operating mechanism, said means consisting of a collarsurrounding the shaft, an annular' hanger supporting said collar, camscarried by said collar and hanger and adapted for mutual engagement, anda lever attached to the collar.

14C. An apparatus for the purpose stated, including a supporting basearranged to turn about a vertical axis, a sleeve journaled to rock insaid base, means for clamping said sleeve against turning, a drill stockformed integral with said sleeve and extending at a right angletherefrom, drill operating means carried by said sleeve and drill stock,and a driving sha-ftarranged with its axis in the same plane as the axisof the drill stock.

15. An apparatus for the purpose stated, including a supporting basearranged to turn about a vertical axis, a sleeve journaled to rock onsaid base, means for clamping said sleeve to prevent turning, a drillstock formed integral with said sleeve and extending at an angletherefrom, drill operating means carried by said sleeve and drill stock,a driving shaft arranged with its axis in the same plane as the axis ofthe drill stock, and manually operated means for shifting the drivingshaft longitudinally.

1n testimony whereof 1 affix my signature in the presence of twowitnesses.

JYGHN H. HUHN.

1Witnesses C. B. BROWN, 1t. A. SATTERFIELD.

